Spinning and twisting spindle



June 5, 1951 .1. MANDOUCHITCH 2,555,652

SPINNING AND TWISTING SPINDLE Filed June 5, 1949 2 Sheets-Sheet 1PIC-3.1

June 5, 1951 J. MANDOUCHITCH SPINNING AND TWISTING SPINDLE Filed June 3.1949 2 Sheets-Sheet 2 Patented June 5, 1951 UNITED STATES PATENT OFFICEApplication June 3, 1949, Serial No. 96,855 In Switzerland May 30, 19487 Claims. 1

This invention relates to spinning and doubling or twisting spindles. Itis an object of the present invention to provide a spindle which isparticularly adapted for high speeds of rotation.

According to an important feature of the invention, the spindle which isof the xind comprising roller members arranged between a fixed holdermember and the rotary shaft of the spindle, is provided with at leasttwo roller members one of which is arranged between the fixed holdermember and an intermediate rotary member while the other one is arrangedbetween said intermediate rotary member and the shaft of the spindle,axial thrust bearings being provided to define the axial positions ofthe intermediate rotary member and of the spindle shaft respectivelyrelative to the fixed holder.

The annexed drawings diagrammatically show by way of examples twospindle constructions embodying the invention.

In the drawings:

Figure 1 is an axial sectional view of the first construction, and

Figure 2 is an axialsectional view of the second construction.

According to the embodiment of the invention shown in Figure 1, thespindle comprises a bobbincarrier I, driven in rotation by means of awharve 2. The bobbin carrier l is secured to the shaft or blade having adownward extension 3 and a cylindrical middle portion 4. On the latteris arranged a roller bearing 5 carrying an intermediate rotary member 6.

The tubular shaped member 6 surrounds the conical extension 3 of theblade and carries at its lower end an axial thrust bearing 1 resting onthe one hand on the lower end of the blade extension 3, and on the otherhand on a fixed pivot 8 rigidly secured to the holder I I.

The rotary sleeve 6 is supported by means of a roller bearing 9 within arecess I0 of the stationary holder H.

The operation of this spindle is as follows: when the bobbin carrier Iis driven in rotation by the wharve 2, the intermediate rotary member 6is driven too in rotation by friction. However, as the said intermediatemember rotates freely, its speed of rotation is defined on the one handby the friction of the rollers of the roller bearing 9, and on the otherhand by the friction of the rollers of the roller bearing 5. The member6 will thus reach a speed which is intermediate between that of theblade 4, 3 and speed zero of the holder H, so that the effective speedof the bobbin carrier I can be substantially increased.

If, for instance, the roller bearings 5 and 9 are calculated to allowspeeds of 6,000 revolutions per minute, the bobbin carrier I can bedriven at a speed of 12,000 R. P. M., since the relative speeds betweenthe stationary holder H and the rotary member 6 on the one hand andbetween said rotary member 6 and the spindle blade 3, 4 on the otherhand do not overreach then 6,000 R. P. M.

Lubrication is insured on the one hand by the tapering of the bladeextension 3 and on the other hand by the outer conical shape of a sleevel2 surrounding and secured to the rotary member 6.

The axial thrust bearing 1 is preferably made of synthetic jewel inorder to reduce the friction and the wear. In the construction shown inFigure 2, the blade 23 of the spindle is hollow and rotates through themedium of two roller bearings 25 about a rotary member 26. The lower endof the latter which projects from the lower end of the hollow blade 23is rotatably supported within the recess 30 of the tubular holder 3i bya roller bearing 29 and an axial ball thrust bearing 21, 28.

The bobbin carrier 2| further rests on the upper end of the member 26 bymeans of an axial thrust bearing 33.

In this second construction, the roller bearings 25 and 29 have the samediameter, that is to say their roller races have the same diameter. Themember 26 will be thus likely driven at about one half of the rotationspeed of the bobbin carrier 2|. Furthermore a rotary member 26 ofsmaller diameter can be provided, thus obtaining for a given speed acomparatively low circumferential speed of this member. Now the speed ofrotation of a member with respect to the other is limited principally bythe difference between the circumferential speeds which determines thespeed of rotation of the rollers.

Lubrication of the roller bearings is insured on the one hand by thetapered portion 3-1 of the member 26 and, on the other hand, by aconical sleeve 35 secured to the inner wall of the hollow blade 23, saidsleeve being further intended as a spacing member between the two rollerbearings 25.

It appears clearly from the foregoing and from the annexed drawings thatthe spindle according to the invention is designed for much higherspeeds than the roller or ball bearing spindles known up to now.

What I claim is:

1. A spinning and twisting spindle comprising a stationary holdermember, a rotary shaft for 2. A spinning and twisting spindle comprisinga tubular stationary holder member, a tubular intermediate rotary memberwithin said tubular stationary holder member, at least one rollerbearing between said stationary holder member and said intermediaterotary member, a rotary center shaft for carrying a yarn package andhaving its rear portion extending Within said tubular intermediaterotary member, at least one roller bearing between said tubularintermediate rotary member and said center shaft, an axial thrustbearing closing the lower extremity of said tubular intermediate rotarmember and rotatably supporting the lower end of said center shaft, saidthrust bearing resting on a pivot secured to the lower end of saidtubular stationary holder member, and a wharve secured to the upper endof said center shaft for driving it in rotation.

3. A spinning and twisting spindle as claimed in claim 2, wherein thelower portion of the rotary center shaft is conical for lubricationpurpose.

4. A spinning and twisting spindle as claimed in claim 2, wherein thetubular intermediate ro tary member carries an upwardly tapered outersleeve for lubricatio :purpose.

5. A spinning and twisting spindle comprising "portion of saidintermediate rotary member extending therein, two roller bearingsbetween said tubular portion of the center shaft and the portion of saidintermediate rotary member extending therein, a ball thrust bearingbetween the lower end of said stationary holder member and the lower endof said intermediate rotary member, a thrust bearing between the upperend of said intermediate rotar member and the bottom of said tubularlower portion of the center shaft, and a wharve secured to the upper endof said center "shaft for driving it in rotation.

6. A spinning and twisting spindle as claimed in claim 5, wherein thetubular lower portion of the center shaft is provided with a downwardlytapered inner sleeve for lubrication purpose.

7.. A spinning and twisting spindle 'as claimedin 'claim 5, wherein thelower end of the intermediate rotary member is conical for lubricationpurpose.

JAN MANDOUCHITCH.

REFERENCES CITED The following references are of record in the file'ofthis patent:

UNITED STATES PATENTS Number Name Date 768,555 Belanger Aug. 23, 19041,528,385 seibei Mar. 3, :1925

